Expose getters methods for NQE on UI thread

net/nqe/network_quality_estimator.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 #define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 139 matching lines @@
     ThroughputObserver() {}
     virtual ~ThroughputObserver() {}
 
    private:
     DISALLOW_COPY_AND_ASSIGN(ThroughputObserver);
   };
 
   // Provides simple interface to obtain the effective connection type.
   class NET_EXPORT NetworkQualityProvider {
    public:
+    virtual ~NetworkQualityProvider() {}
+
     // Returns the current effective connection type.
     virtual EffectiveConnectionType GetEffectiveConnectionType() const = 0;
 
-    virtual ~NetworkQualityProvider() {}
-
     // Adds |observer| to a list of effective connection type observers.
     virtual void AddEffectiveConnectionTypeObserver(
         EffectiveConnectionTypeObserver* observer) = 0;
 
     // Removes |observer| from a list of effective connection type observers.
     virtual void RemoveEffectiveConnectionTypeObserver(
         EffectiveConnectionTypeObserver* observer) = 0;
 
+    // Returns the current HTTP RTT estimate. If the estimate is unavailable,
+    // the returned optional value is null.
+    virtual base::Optional<base::TimeDelta> GetHttpRTT() const;
+
+    // Returns the current transport RTT estimate. If the estimate is
+    // unavailable, the returned optional value is null.
+    virtual base::Optional<base::TimeDelta> GetTransportRTT() const;
+
+    // Returns the current downstream throughput estimate (in kilobits per
+    // second). If the estimate is unavailable, the returned optional value is
+    // null.
+    virtual base::Optional<int32_t> GetDownstreamThroughputKbps() const;
+
     // Adds |observer| to the list of RTT and throughput estimate observers.
     // |observer| would be notified of the current RTT and throughput estimates
     // in the next message pump.
     virtual void AddRTTAndThroughputEstimatesObserver(
         RTTAndThroughputEstimatesObserver* observer) = 0;
 
     // Removes |observer| from the list of RTT and throughput estimate
     // observers.
     virtual void RemoveRTTAndThroughputEstimatesObserver(
         RTTAndThroughputEstimatesObserver* observer) = 0;
@@ skipping 635 matching lines @@
       disallowed_observation_sources_for_transport_;
 
   base::WeakPtrFactory<NetworkQualityEstimator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkQualityEstimator);
 };
 
 }  // namespace net
 
 #endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_